Tracking P0456 on Your 2021 Telluride
Your 2021 Telluride (1st generation) has flagged P0456—a very small EVAP leak. The 3.8L Lambda II V6 uses a standard EVAP system. Kia's 5yr/60k warranty covers through 2026—act now before it expires.
Clues
- Check engine light on
- P0456 stored
- No drivability symptoms
- Gas cap area may need inspection
Suspects
- Gas Cap Seal (High Likelihood): Most common cause. $0 warranty or $10–$15.
- Purge Control Solenoid Valve (High Likelihood): V6 heat cycling. $0 warranty or $100–$220.
- Canister Close Valve (Medium Likelihood): Vent control. $0 warranty or $100–$230.
- EVAP Hose (Medium Likelihood): Under-body routing. $0 warranty or $120–$250.
- Charcoal Canister (Low Likelihood): Fuel overfilling. $0 warranty or $200–$380.
Diagnostic Steps
- Reseat gas cap
- Dealer appointment—Kia 5yr/60k through 2026
- Free warranty repair
- If warranty expired by mileage, smoke test ($80–$150)
Costs
- Under warranty: $0
- Gas cap: $10–$15
- Purge valve: $100–$220
- Canister close valve: $100–$230
Can I Drive?
Yes. P0456 has zero impact on the V6, AWD system, towing, or safety.
Warranty
Kia's 5yr/60k through 2026—check mileage, Tellurides accumulate miles quickly. 10yr/100k powertrain. Federal emissions 8yr/80k through 2029.